It's a screen door. It's there so the bugs don't come in.
It's a screen door to stop the bugs from getting in the house.
1) It's a screen door. It's there so the bugs don't come in.
「網戸だよ。虫が入ってこないようにあるんだよ。」
2) It's a screen door to stop the bugs from getting in the house.
「網戸だよ。虫が家の中に入ってこないためだよ。」
「網戸」は screen door と言います。
「虫」は bugs
come in で「入ってくる」
get in the house で「家に入る」
ご参考になれば幸いです!